EP1615605B1 - A method of forming a disposable, refastenable absorbent article - Google Patents
A method of forming a disposable, refastenable absorbent article Download PDFInfo
- Publication number
- EP1615605B1 EP1615605B1 EP04701815A EP04701815A EP1615605B1 EP 1615605 B1 EP1615605 B1 EP 1615605B1 EP 04701815 A EP04701815 A EP 04701815A EP 04701815 A EP04701815 A EP 04701815A EP 1615605 B1 EP1615605 B1 EP 1615605B1
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- EP
- European Patent Office
- Prior art keywords
- lines
- perforations
- pair
- elastic
- laminate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15756—Applying tabs, strips, tapes, loops; Knotting the ends of pads
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
- A61F13/15747—Folding; Pleating; Coiling; Stacking; Packaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/56—Supporting or fastening means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/56—Supporting or fastening means
- A61F13/5622—Supporting or fastening means specially adapted for diapers or the like
- A61F13/565—Supporting or fastening means specially adapted for diapers or the like pants type diaper
- A61F13/5655—Supporting or fastening means specially adapted for diapers or the like pants type diaper adjustable pants type diapers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1007—Running or continuous length work
- Y10T156/1015—Folding
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1054—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing and simultaneously bonding [e.g., cut-seaming]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1056—Perforating lamina
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1062—Prior to assembly
- Y10T156/1075—Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
- Y10T156/1077—Applying plural cut laminae to single face of additional lamina
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
- Y10T156/1084—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing of continuous or running length bonded web
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Description
- Disposable, refastenable absorbent articles for absorbing human discharges can appear similar in size and shape to regular cloth underwear which is designed to be laundered and reused two or more times. A disposable, refastenable absorbent article is an article intended to be worn by persons, such as infants, toddlers, or adults, which is designed for single use or temporary use and is meant to be disposed of after being used once instead of being laundered or dry cleaned for re-use. Some examples of disposable, refastenable absorbent articles, include infant diapers, training pants, adult incontinence garments, feminine menstrual pants, etc.
- Some disposable, refastenable absorbent articles manufactured today resemble regular cloth underwear in that they have a waist opening and a pair of leg openings. Such disposable, refastenable absorbent articles can be pulled up around the torso of a user in a similar fashion as regular cloth underwear. Still other disposable, refastenable absorbent articles contain an attachment mechanism that will allow the article to be opened into a flat configuration prior to being placed around the torso of a user. This design is beneficial for bed bound users who may be immobile and who need assistance in securing the article in place. Still other disposable, refastenable absorbent Articles contain attachment means for opening and closing the waist opening after the article has been positioned around the torso of a user. This feature is advantageous in that the user does not have to undress when there is a desire to check the status of the absorbent article. One such refastenable absorbent article uses a pair of straight perforation lines that extend from the waist opening to the pair of leg openings. The straight perforation lines are designed to be broken either prior to positioning the absorbent article around the user's torso or while the absorbent article is already positioned about the user's torso. The pair of attachment members is then utilized to refasten the absorbent article so that it is snug about the user's torso.
US 2002/0148557 gives an example of a personal can absorbent article with releasable fault lines which allow the user to remove the article without 1 removing his outer fauts. This present design suffers from two deficiencies. Namely, a majority of each line of perforations is visually hidden by the attachment members and some users cannot see them and thereby may not even know that they are present. Second, each line of perforations may be ergonomically hard to tear cpen by older adults, some of who may be suffering from arthritis, because the straight Perforation lines are aligned adjacent and parallel to the side seams. - Now a method of forming a disposable, refastenable absorbent article has been invented that uses a pair of lines of perforations that are aligned non-parallel to the side seams to make them more visually noticeable. The configuration of the pair of lines of perforations also enable the user to easily grasp the waist band on either side of each line of perforations and tear them open. The disposable, refastenable absorbent article also possesses an aesthetically pleasing design with improved fit around the human torso.
- The present invention relates to a method of forming a disposable, refastenable absorbent article as defined by claim 1. The method includes the steps of directing a first material parallel to and spaced apart from a second material. The first material has a predetermined width. A pair of lines of perforations is formed across the width of the first material. A pair of attachment members is then secured to the first material such that each attachment member bridges across one of the lines of perforations. One end of each of the pair of attachment members is removeably attached to the first material. An absorbent assembly is secured across the first and second materials to form a subassembly having a transverse centerline. The subassembly is then folded on the transverse centerline and the first and second materials are bonded together by first and second seam lines. Each of the first and second seam lines is aligned non-parallel to and situated outward from one of the lines of perforations to form a waist opening and a pair of leg openings. The first and second materials are then separated at locations outward from each of the first and second seam lines to form a disposable, refastenable absorbent article.
- According to another aspect of the present invention there is provided a method as defined by claim 15.
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Fig. 1 is a schematic depicting a method of forming a disposable, refastenable absorbent article. -
Fig. 2 is a perspective view of a disposable, refastenable absorbent article for absorbing human discharge that includes a pair of lines of perforations aligned non-parallel to a pair of seam lines and further includes a pair of attachment members which bridge over a portion of the pair of lines of perforations. -
Fig. 3 is a front view of a line of perforations having a sinusoidal configuration and arranged in a non-parallel relationship to the seam line. -
Fig. 4 is a front view of a line of perforations having a herringbone configuration. -
Fig. 5 is a front view of a line of perforations having a saw tooth configuration. -
Fig. 6 is a sectioned, perspective view of an absorbent assembly. -
Fig. 7 is a plane view of a disposable, refastenable absorbent article having a pair of linear lines of perforations aligned at an angle so as to be non-parallel to the seam lines. - Referring to
Fig. 1 , a schematic is shown depicting a method of forming a disposable, refastenableabsorbent article 10. The term "disposable absorbent article" is used herein to define an article that is intended to be worn by persons, including infants, toddlers or adults, which is designed for single use or temporary use and is meant to be disposed of after being used once instead of being laundered or dry cleaned for re-use. Theabsorbent article 10 is designed to absorb and/or retain one or more bodily discharges of waste material such as urine, perspiration, excrement, feces, menses, menstrual fluid, as well as other liquid and/or solid waste. By "refastenable" is meant that theabsorbent article 10 includes an opening mechanism and an attachment mechanism which will permit thearticle 10 to be opened and closed at least once. The refastenableabsorbent article 10 can be pulled up around the torso of a user just like regular cloth underwear and can be later opened to inspect the interior of theabsorbent article 10. Alternatively, theabsorbent article 10 can be opened into a flat configuration prior to being placed about the torso of a user and then closed. The attachment mechanism also allows the waist opening of theabsorbent article 10 to be snugly adjusted for a more secure fit, if desired. - The method includes the steps of directing or routing a
first material 12 from asupply roll 14 through asplitter 16. Thefirst material 12 can be any natural or synthetic material that has been formed into a woven or non-woven web. Thefirst material 12 can be an elastic material, an elastic laminate, a thermoplastic film, a spunbond web, a bonded carded web, a stretch bonded laminate, etc. Spunbond is a non-woven material that works well in constructing a disposableabsorbent article 10. At thesplitter 16, thefirst material 12 is divided or cleaved lengthwise into a firstelongated strip 18 and a secondelongated strip 20. Alternatively, one can start with two separate materials each wound on a supply roll. In this embodiment, nosplitter 16 is required. - A construction adhesive is applied to a surface of the first
elongated strip 18 by anadhesive spray unit 22. Similarly, a construction adhesive is applied to a surface of the secondelongated strip 20 by anadhesive spray unit 24. Various kinds of hot or cold melt adhesives can be utilized and these are known to those skilled in the art. It should also be noted that the construction adhesive can be applied to only one surface of the first or second elongated strips, 18 or 20 respectively, if desired. - An
elastic material 26, in the form of one or more elastic strands, one or more elastic ribbons, an elastic web, etc. is routed from asupply roll 28 toward anip 30. Desirably, two or moreelastic strands 26 are present. More desirably, from between about 3 to about 30 elastic strands are present. Most desirably, from between about 4 to about 20 elastic strands are present. For the purpose of discussion only, theelastic material 26 will be described below as including a plurality ofelastic strands 26. Theelastic strands 26 can be formed from LYCRA® or from any other elastic material known to those skilled in the art. LYCRA® is a registered trademark of E. I. Du Pont De Nemours & Co. having an office at 1007 Market Street, Wilmington, Delaware 19898. The diameter and/or cross-sectional configuration of theelastic strands 26, the decitex (weight in grams per 10,000 meters of a strand) of theelastic strands 26, and the tension imparted into theelastic strands 26 can all be varied to suit one's particular product needs. - At the
nip 30, the firstelongated strip 18 is positioned over the secondelongated strip 20 and the twostrips elastic strands 26 are secured between the first and second elongated strips, 18 and 20 respectively, to form a firstelastic laminate 32. The firstelastic laminate 32 has a predetermined width (w1). Theelastic strands 26 can be spaced apart and aligned parallel to one another. Alternatively, theelastic strands 26 can abut one another, be aligned at an angle to one another or even overlap one another. Theelastic strands 26 can be uniformly or randomly arranged relative to one another. Theelastic strands 26 can occupy a portion of the surface area of the firstelastic laminate 32 or the entire surface area of the firstelastic laminate 32. Furthermore, theelastic strands 26 can be located in one or more designated areas of the laminate 32, if desired. - A
second material 34 is directed or routed from asupply roll 36 through asplitter 38. Thesecond material 34 can be any natural or synthetic material that has been formed into a woven or non-woven web. Thesecond material 34 can be an elastic material, an elastic laminate, a thermoplastic film, a spunbond web, a bonded carded web, a stretch bonded laminate, etc. Spunbond is a non-woven material that works well in constructing a disposableabsorbent article 10. At thesplitter 38, thesecond material 34 is divided or cleaved lengthwise into a firstelongated strip 40 and a secondelongated strip 42. Alternatively, one can start with two separate materials each wound on a supply roll. In this embodiment, nosplitter 38 is required. - A construction adhesive is applied to a surface of the first
elongated strip 40 by anadhesive spray unit 44. Similarly, a construction adhesive is applied to a surface of the secondelongated strip 42 by anadhesive spray unit 46. Various kinds of hot or cold melt adhesives can be utilized and these are known to those skilled in the art. It should be noted that the construction adhesive can be applied to only one surface of the first or second elongated strips, 40 or 42 respectively, if desired. - An
elastic material 48, in the form of one or more elastic strands, one or more elastic ribbons, an elastic web, etc., is routed from asupply roll 50 toward anip 52. Desirably, two or more elastic strands are present. More desirably, from between about 3 to about 30 elastic strands are present. Most desirably, from between about 4 to about 20 elastic strands are present. For the purpose of discussion only, theelastic material 48 will be described below as including a plurality ofelastic strands 48. Theelastic strands 48 can be formed from LYCRA® or from any other elastic material known to those skilled in the art. LYCRA® is a registered trademark of E.I. Du Pont De Nemours & Co. having an office at 1007 Market Street, Wilmington, Delaware 19898. The diameter and/or cross-sectional configuration of theelastic strands 48, the decitex (weight in grams per 10,000 meters of a strand) of theelastic strands 48, and the tension imparted into theelastic strands 48 can all be varied to suit one's particular product needs. - At the
nip 52, the firstelongated strip 40 is positioned over the secondelongated strip 42 and the twostrips elastic strands 48 are secured between the first and second elongated strips, 40 and 42 respectively, to form a secondelastic laminate 54. The secondelastic laminate 54 has a predetermined width (w2). The width (w2) of the secondelastic laminate 54 can be less than, equal to, or be greater than the width (w1) of the firstelastic laminate 32. Desirably, the width (w2) of the secondelastic laminate 54 will be approximately equal to the width (w1) of the firstelastic laminate 32. Theelastic strands 26 can be spaced apart and aligned parallel to one another. Alternatively, theelastic strands 26 can abut one another, be aligned at an angle to one another or even overlap one another. Theelastic strands 26 can be uniformly or randomly arranged relative to one another. Theelastic strands 26 can occupy a portion of the surface area of the secondelastic laminate 54 or the entire surface area of the secondelastic laminate 54. Furthermore, theelastic strands 26 can be located in one or more designated areas of the secondelastic laminate 54, if desired. - It should be noted that if one or both of the first and second materials, 12 and 34 respectively, is constructed from an elastic material, then there is no need to practice the step of securing elastic strands to form a laminate. For purposes of discussion, the invention will be described below as using the two
elastic laminates - Referring to
Figs. 1 and2 , the firstelastic laminate 32 is directed in a machine direction (MD), moving from left to right inFig. 1 , to aperforation unit 56. Theperforation unit 56 is capable of forming at least one line ofperforations 58 in apredetermined length 62 of the firstelastic laminate 32. Desirably, theperforation unit 56 forms a pair of lines ofperforations predetermined length 62 of the firstelastic laminate 32. Each of the lines ofperforations elastic laminate 32. Each of the pair of lines ofperforations perforations perforations Fig. 2 , the lines ofperforations lines cf perforations perforations absorbent article 10. - Referring to
Figs. 3-5 , three different configurations for the pair of lines ofperforations Fig. 3 , the line ofperforations 58 is shown having a sinusoidal configuration. The number of lobes in the sinusoidal pattern can vary to suit one's particular needs. InFig. 4 , the line ofperforations 58 is shown having a herringbone configuration. The herringbone configuration is a pattern of oblique parallel lines arranged as single lines alternating in direction. InFig. 5 , the line ofperforations 58 is shown having a saw tooth configuration where the lines are arranged in a serrated fashion. - Referring again to
Fig 2 , each of the lines ofperforations cuts 64 aligned adjacent to anuncut area 66. The length of each of the slits orcuts 64 can be less than, equal to, or be greater than the length of at least one of theuncut areas 66. The ratio between the length of a slit or cut 64 to anuncut area 66 can be adjusted to increase or decrease the amount of force required to break the lines ofperforations perforations perforations perforations perforations perforations perforations perforations - The lines of
perforations cuts 64 has a length that is equal to the length of each of theuncut areas 66. Alternatively, the length of the land and/or slit or cut areas, 64 and 66 respectively, can vary along a portion of or over the total length of each of the lines ofperforations cuts 64 is greater than the length of theuncut areas 66, that the lines ofperforations perforations cuts 64 to be at least two times greater than the length of each of theuncut areas 66. Desirably, the length of each of the slits orcuts 64 will be at least three times greater than the length of each of theuncut areas 66. More desirably, the length of each of the slits orcuts 64 will be at least four times greater than the length of each of theuncut areas 66. - Referring again to
Figs. 1 and2 , the method further includes the step of securing a pair ofattachment members elastic laminate 32 at abonding station 72. The pair ofattachment members attachment members base portion 74, afirst tab 76 and asecond tab 78. Thebase portion 74 can be secured to the firstelastic laminate 32 by an adhesive, by ultrasonics, by a mechanical mechanism, by heat, by pressure, by heat and pressure, by a combination of the aforementioned, or by other means known to those skilled in the art. It should be noted that thebase portion 74 can be adhesively attached and then be ultrasonically bonded to provide for a more secure attachment. Thebase portion 74 is designed to be permanently secured to the firstelastic laminate 32 such that it cannot be removed without tearing or destroying the material to which it is secured. - The first and second tabs, 76 and 78 respectively, of each
attachment member perforations elastic laminate 32. Each of the first and second tabs, 76 and 78 respectively, can vary in shape, size, dimension, thickness, etc. It should be noted that the shape of the pair of lines ofperforations tabs elastic laminate 32, be opened or separated from the firstelastic laminate 32 and then be reattached to the firstelastic laminate 32 at least once. Desirably, the first and second tabs, 76 and 78 respectively, are designed to be attached to the firstelastic laminate 32, be separated or removed from the firstelastic laminate 32, and then be reattached to the firstelastic laminate 32 at least two times. More desirably, the first and second tabs, 76 and 78 respectively, are designed to be attached to the firstelastic laminate 32, be separated from the firstelastic laminate 32 and then be reattached to the firstelastic laminate 32 several times. - Still referring to
Fig. 1 , the method also includes the step of positioning and securing anabsorbent assembly 80 perpendicularly across the first and second materials, 12 and 34 respectively. InFig. 1 , the first and second materials, 12 and 34 respectively, are the first and second elastic laminates, 32 and 54 respectively. One will notice that the firstelastic laminate 32 is aligned approximately parallel to thesecond laminate 54. Desirably, the firstelastic laminate 32 is aligned parallel to and is spaced apart from the secondelastic laminate 54. The distance the firstelastic laminate 32 is spaced apart from the secondelastic laminate 54 can vary depending on the exact size of an absorbent article one desires to manufacture. For example, for a small sizeabsorbent article 10 that may be designed for a baby, the distance between the first and second laminates, 32 and 54 respectively, can be relatively small. In this case, the distance may range from between about 1 inch (about 2.54 centimeters (cm)) to about 6 inches (about 15.2 cm). For a large adult incontinence article, the distance between the first and second laminates, 32 and 54 respectively, can be relatively large. For a large adult incontinence article, the distance may range from between about 4 inches (about 10 centimeters (cm)) to about 20 inches (about 51 cm). - The
absorbent assembly 80 can be permanently or temporarily secured to the first and second materials, 12 and 34 respectively, or to the first and second elastic laminates, 32 and 54 respectively, to form a subassembly orchassis 82. Thesubassembly 82 has a transverse centerline X-X. Thesubassembly 82 also has a generally H-shaped configuration and some of the material located in the secondelastic laminate 54 and even in theabsorbent assembly 80, can be cut or formed into a curved orangled section 83. The curved orangled section 83 is formed on each side of theabsorbent assembly 80 and serves to provide a good fit around the user's thighs. The curved orangled sections 83 will form a portion of each leg cutout. Theabsorbent assembly 80 can be secured to the first and second elastic laminates, 32 and 54 respectively, by a construction adhesive, by ultrasonics, by a mechanical mechanism, such as sewing, by a combination of the aforementioned attachment mechanisms or by other means known to those skilled in the art. Desirably, a hot or a cold melt adhesive is used to form a permanent attachment between theabsorbent assembly 80 and the first and second materials, 12 and 34 respectively, or between theabsorbent assembly 80 and the first and second elastic laminates, 32 and 54 respectively. - Referring now to
Fig. 6 , a representation of anabsorbent assembly 80 is shown. Theabsorbent assembly 80 includes a liquidpermeable bodyside liner 84, a liquid-impermeable backsheet 86 and an absorbent 88 positioned therebetween. One or more layers ofabsorbent 88 can be present. Furthermore, the absorbent 88 can contain a superabsorbent material, if desired. Theliner 84 and thebacksheet 86 are joined together to form anouter periphery 90 that completely surrounds and encloses the absorbent 88. Theabsorbent assembly 80 can then be positioned over a portion of the first and second materials, 12 and 34 respectively, or over a portion of the first and second elastic laminates, 32 and 54 respectively, such that the backsheet 86 contacts and is secured to the first and second elastic laminates, 32 and 54 respectively. A permanent attachment works well but an attachment that allows theabsorbent assembly 80 to float or move relative to the first andsecond laminates - Referring again to
Figs. 1 and2 , the method further includes folding thesubassembly 82 along the transverse centerline X--X. The first and secondelastic laminates first seam line 92 and asecond seam line 94. Desirably, theseam lines seam lines perforations waist opening 96 and a pair ofleg openings perforations cut lines absorbent article 10. The cut lines 102 and 104 can be formed parallel to the first and second seam lines, 92 and 94 respectively. Desirably, thecut lines cut lines absorbent articles 10 to be sequentially formed. - - Referring now to
Fig. 7 , an alternative embodiment is depicted showing a disposable, refastenable absorbent article 10' having a pair oflinear perforation lines linear perforation lines seam lines perforations waist opening 96 to one of theleg openings adjacent seam lines perforations adjacent seam lines perforations tabs attachment members absorbent article 10 or 10' to readily see where the lines ofperforations - When the disposable, refastenable
absorbent article 10 or 10' is an incontinent undergarment designed to be worn by older adults who may suffer from poor eye sight, dementia or possibly arthritis, it is best to make them consciously aware of the presence and location of the pair of lines ofperforations perforations attachment members perforations absorbent article 10 or 10' snug about their waist at all times. - While the invention has been described in conjunction with several specific embodiments, it is to be understood that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the aforegoing description. Accordingly, this invention Is intended to embrace all such alternatives, modifications and variations that fall within the scope of the appended claims.
Claims (19)
- A method of forming a disposable, refastenable absorbent article, said method comprising the steps of:a) directing a first material (12) parallel to and spaced apart from a second material (34), said first material (12) having a width;b) forming a pair of spaced apart lines of perforations (58,60) across the width of said first material (12);c) securing a pair of attachment members (68,70) to said first material (12), each attachment member (68,70) bridging across one of said pair of lines of perforations (58,60) and being removeably attached to said first material (12);d) securing an absorbent assembly (80) across said first and second materials (12,34) to form a subassembly (82) having a transverse centerline (X-X);e) folding said subassembly (82) on said transverse centerline (X-X);f) bonding said first and second materials (12,34) together by first and second seam lines (92,94), each of said first and second seam lines (92,94) being located outward from one of said pair of lines of perforations (58,60) to form a waist opening (96) and a pair of leg openings (98,100); andg) separating said first and second materials (12,34) at locations outward from each of said first and second seam lines (92,94) to form a disposable, refastenable absorbent article (10,10');characterised in that each of said first and second seams lines (92,94) are aligned non-parallel to one of said pair of lines of perforations (58,60).
- The method of claim 1 wherein said first material (12) is elastic.
- The method of claim 1 or 2 wherein said first material (12) is an elastic laminate (32).
- The method of claim 1, 2 or 3 wherein said second material (34) is elastic.
- The method of claim 4 wherein said second material (34) is an elastic laminate (54).
- The method of any preceding claim wherein each of said pair of lines of perforations (58-60) is non-linear.
- The method of claim 6 wherein each of said pair of lines of perforations (58,60) has an arcuate configuration.
- The method of any preceding claim wherein for each of said pair of lines of perforations (58,60) one line of perforations (58,60) is a mirror image of said other line of perforations (58,60).
- The method of any of claims 1 to 5 wherein each of said pair of lines of perforations (58,60) is aligned at an angle to one of said first and second seam lines (92,94).
- The method of claim 1, wherein:said first material (12) is a first elastic laminate (32) and said second material (34) is a second elastic laminate (54);said pair of spaced apart lines of perforations (58,60) are non-linear;said pair of attachment members (68,70) are removeably attached at one end to said first laminate (32);said absorbent assembly (80) is secured perpendicularly across said first andsecond laminates (32,54) to form a subassembly (82) having a transverse centerline; andeach of said first and second seam lines (92,94) are being aligned laterally outward from one of said pair of lines of perforations (58,60).
- The method of claim 90 wherein each of said pair of lines of perforations (58,60) has an arcuate configuration.
- The method of claim 10 wherein each of said pair of lines of perforations (58,60) has a sinusoidal configuration.
- The method of any preceding claim wherein said absorbent assembly includes a liquid permeable bodyside liner (84), a liquid-impermeable backsheet (86) and an absorbent (88) positioned therebetween, said liner (84) and said backsheet (86) being joined together and said backsheet (86) being secured to both of said first and second laminates (32,54).
- The method of any of claims 10 to 13 wherein each of said pair of lines of perforations (58,60) is tearable.
- A method of forming a disposable, refastenable absorbent article comprising the steps of:a) splitting a first material (12) into a first elongated strip (18) and a second elongated strip (20) and aligning said first elongated strip (18) over said second elongated strip (20);b) splitting a second material (34) into a first elongated strip (40) and a second elongated strip (42) and aligning said first elongated strip (40) over said second elongated strip (42);c) routing at least one elastic strand (26,48) between said first and second elongated strips (18,20,40,42) of said first and second materials (12,34) and securing said at least one elastic strand (26,48) to said respective first and second elongated strips (18,20,40,42) to form a first laminate (32) and a second laminate (54), each of said first and second laminates (32,54) being aligned parallel to one another and being spaced apart, and each of said laminates (32,54) having a width;d) forming a pair of spaced apart, non-linear lines of perforations (58,60) across the width of said first laminate (32);e) securing a pair of attachment members (68,70) to said first laminate (32), each attachment member (68,70) bridging across one of said pair of lines of perforations (58,60) and being removeably attached at one end to said first laminate (32);f) securing an absorbent assembly (80) perpendicularly across said first and second laminates (32,54) to form a subassembly (82) having a transverse centerline;g) folding said subassembly (82) on said transverse centerline;h) bonding said first and second laminates (32,54) together by first and second seam lines (92,94), each of said first and second seam lines (92,94) being aligned laterally outward from one of said pair of lines of perforations (58,60) to form a waist opening (96) and a pair of leg openings (98,100); andi) separating said first and second laminates (32,54) at locations laterally outward from each of said first and second seam lines (92,94) to form a disposable, refastenable absorbent article (10,10');characterised in that each of said first and second seam lines (92,94) are aligned non-parallel to one of said pair of lines of perforations (58,60).
- The method of claim 15 wherein said subassembly (82) has a generally H-shaped configuration.
- The method of claim 16 wherein a portion of said generally H-shaped configuration is cut to form leg cutouts.
- The method of any of claims 15 to 17 wherein a multiplicity of refastenable absorbent articles is sequentially formed by severing each subassembly from an adjacent subassembly.
- The method of any of claims 15 to 18 wherein said absorbent assembly (80) includes a liquid permeable bodyside liner (84), a liquid-impermeable backsheet (86) and an absorbent (88) positioned therebetween, said liner (84) and said backsheet (86) being joined together and said backsheet (86) being secured to both of said first and second laminates (32,54).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/394,361 US6991696B2 (en) | 2003-03-21 | 2003-03-21 | Method of forming a disposable, refastenable absorbent article |
PCT/US2004/000863 WO2004093764A1 (en) | 2003-03-21 | 2004-01-13 | A method of forming a disposable, refastenable absorbent article |
Publications (2)
Publication Number | Publication Date |
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EP1615605A1 EP1615605A1 (en) | 2006-01-18 |
EP1615605B1 true EP1615605B1 (en) | 2012-09-19 |
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EP04701815A Expired - Fee Related EP1615605B1 (en) | 2003-03-21 | 2004-01-13 | A method of forming a disposable, refastenable absorbent article |
Country Status (7)
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US (1) | US6991696B2 (en) |
EP (1) | EP1615605B1 (en) |
JP (1) | JP2006521169A (en) |
KR (1) | KR101053308B1 (en) |
CA (1) | CA2518543A1 (en) |
MX (1) | MXPA05009344A (en) |
WO (1) | WO2004093764A1 (en) |
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-
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- 2003-03-21 US US10/394,361 patent/US6991696B2/en active Active
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2004
- 2004-01-13 WO PCT/US2004/000863 patent/WO2004093764A1/en active Application Filing
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KR20050109968A (en) | 2005-11-22 |
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